{"nhtsa_id":10198324,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-06-28","date":"2021-05-25","document_id":"TSB210109-052520","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"This Technical Service Bulletin provides an updated maintenance schedule and operator recommendations when operating HDZAA Spec F RV gensets in high ambient temperatures, which may result in no start/rough running or overload symptoms.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10198324-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10198324-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10198324","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":["maintenance"],"vehicles":[{"make":"CUMMINS","model":"HDZAA","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}